Wt::ItemDataRole Class Reference

Enumeration that indicates a role for a data item. More...

#include <WModelIndex.h>

Public Member Functions
constexpr	ItemDataRole (int role) noexcept
	Create a new role with a certain int value.
constexpr int	value () const noexcept
	Returns the underlying int of this role.

Static Public Attributes
static constexpr const int	Display = 0
	Role for textual representation.
static constexpr const int	Decoration = 1
	Role for the url of an icon.
static constexpr const int	Edit = 2
	Role for the edited value.
static constexpr const int	StyleClass = 3
	Role for the style class.
static constexpr const int	Checked = 4
static constexpr const int	ToolTip = 5
	Role for a (plain) tooltip.
static constexpr const int	Link = 6
	Role for a link.
static constexpr const int	MimeType = 7
	Role for mime type information.
static constexpr const int	Level = 8
	Level in aggregation, for header data.
static constexpr const int	MarkerPenColor = 16
	Marker pen color (for Chart::WCartesianChart)
static constexpr const int	MarkerBrushColor = 17
	Marker brush color (for Chart::WCartesianChart)
static constexpr const int	MarkerScaleFactor = 20
	Marker size (for Chart::WCartesianChart)
static constexpr const int	MarkerType = 21
	Marker type (for Chart::WCartesianChart)
static constexpr const int	BarPenColor = 18
	Bar pen color (for Chart::WCartesianChart)
static constexpr const int	BarBrushColor = 19
	Bar brush color (for Chart::WCartesianChart)
static constexpr const int	User = 32
	First role reserved for user purposes.

Detailed Description

Enumeration that indicates a role for a data item.

A single data item can have data associated with it corresponding to different roles. Each role may be used by the corresponding view class in a different way.

See also

WModelIndex::data()

Member Data Documentation

Checked

const int Wt::ItemDataRole::Checked = 4

staticconstexpr

Role that indicates the check state.

Data for this role should be a bool. When the Wt::ItemFlag::Tristate flag is set for the item, data for this role should be of type Wt::CheckState.